/*
 * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
 * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <pjsua-lib/pjsua.h>
#include "pjsua_app_common.h"

#define THIS_FILE       "pjsua_app_legacy.c"


/* An attempt to avoid stdout buffering for python tests:
 * - call 'fflush(stdout)' after each call to 'printf()/puts()'
 * - apply 'setbuf(stdout, 0)', but it is not guaranteed by the standard:
 *   http://stackoverflow.com/questions/1716296
 */
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
    (defined (_MSC_VER) && _MSC_VER >= 1400)
/* Variadic macro is introduced in C99; MSVC supports it in since 2005. */
#  define printf(...) {printf(__VA_ARGS__);fflush(stdout);}
#  define puts(s) {puts(s);fflush(stdout);}
#endif


static pj_bool_t        cmd_echo;

/*
 * Print buddy list.
 */
static void print_buddy_list()
{
    pjsua_buddy_id ids[64];
    int i;
    unsigned count = PJ_ARRAY_SIZE(ids);

    puts("Buddy list:");

    pjsua_enum_buddies(ids, &count);

    if (count == 0) {
        puts(" -none-");
    } else {
        for (i=0; i<(int)count; ++i) {
            pjsua_buddy_info info;

            if (pjsua_buddy_get_info(ids[i], &info) != PJ_SUCCESS)
                continue;

            printf(" [%2d] <%.*s>  %.*s\n",
                    ids[i]+1,
                    (int)info.status_text.slen,
                    info.status_text.ptr,
                    (int)info.uri.slen,
                    info.uri.ptr);
        }
    }
    puts("");
}

/*
 * Input URL.
 */
static void ui_input_url(const char *title, char *buf, pj_size_t len,
                         input_result *result, pj_bool_t allow_all)
{
    result->nb_result = PJSUA_APP_NO_NB;
    result->uri_result = NULL;

    print_buddy_list();

    printf("Choices:\n"
           "   0         For current dialog.\n");
    if (pjsua_get_buddy_count() > 0) {
        if (allow_all) {
            printf("  -1         All %d buddies in buddy list\n",
                   pjsua_get_buddy_count());
        }
        printf("  [1 -%2d]    Select from buddy list\n",
               pjsua_get_buddy_count());
    }
    printf("  URL        An URL\n"
           "  <Enter>    Empty input (or 'q') to cancel\n");
    printf("%s: ", title);

    fflush(stdout);
    if (fgets(buf, (int)len, stdin) == NULL)
        return;
    len = strlen(buf);

    /* Left trim */
    while (pj_isspace(*buf)) {
        ++buf;
        --len;
    }

    /* Remove trailing newlines */
    while (len && (buf[len-1] == '\r' || buf[len-1] == '\n'))
        buf[--len] = '\0';

    if (len == 0 || buf[0]=='q')
        return;

    if (pj_isdigit(*buf) || *buf=='-') {

        unsigned i;

        if (*buf=='-')
            i = 1;
        else
            i = 0;

        for (; i<len; ++i) {
            if (!pj_isdigit(buf[i])) {
                puts("Invalid input");
                return;
            }
        }

        result->nb_result = my_atoi(buf);

        if (result->nb_result >= 0 &&
            result->nb_result <= (int)pjsua_get_buddy_count())
        {
            return;
        }
        if (result->nb_result == -1)
            return;

        puts("Invalid input");
        result->nb_result = PJSUA_APP_NO_NB;
        return;

    } else {
        pj_status_t status;

        if ((status=pjsua_verify_url(buf)) != PJ_SUCCESS) {
            pjsua_perror(THIS_FILE, "Invalid URL", status);
            return;
        }

        result->uri_result = buf;
    }
}

static pj_bool_t simple_input(const char *title, char *buf, pj_size_t len)
{
    char *p;

    printf("%s (empty to cancel): ", title); fflush(stdout);
    if (fgets(buf, (int)len, stdin) == NULL)
        return PJ_FALSE;

    /* Remove trailing newlines. */
    for (p=buf; ; ++p) {
        if (*p=='\r' || *p=='\n') *p='\0';
        else if (!*p) break;
    }

    if (!*buf)
        return PJ_FALSE;

    return PJ_TRUE;
}

/*
 * Print account status.
 */
static void print_acc_status(int acc_id)
{
    char buf[80];
    pjsua_acc_info info;

    pjsua_acc_get_info(acc_id, &info);

    if (!info.has_registration) {
        pj_ansi_snprintf(buf, sizeof(buf), "%.*s",
                         (int)info.status_text.slen,
                         info.status_text.ptr);

    } else {
        pj_ansi_snprintf(buf, sizeof(buf),
                         "%d/%.*s (expires=%d)",
                         info.status,
                         (int)info.status_text.slen,
                         info.status_text.ptr,
                         info.expires);

    }

    printf(" %c[%2d] %.*s: %s\n", (acc_id==current_acc?'*':' '),
           acc_id,  (int)info.acc_uri.slen, info.acc_uri.ptr, buf);
    printf("       Online status: %.*s\n",
        (int)info.online_status_text.slen,
        info.online_status_text.ptr);
}

/*
 * Show a bit of help.
 */
static void keystroke_help()
{
    pjsua_acc_id acc_ids[16];
    unsigned count = PJ_ARRAY_SIZE(acc_ids);
    int i;

    printf(">>>>\n");

    pjsua_enum_accs(acc_ids, &count);

    printf("Account list:\n");
    for (i=0; i<(int)count; ++i)
        print_acc_status(acc_ids[i]);

    print_buddy_list();

    //puts("Commands:");
    puts("+=============================================================================+");
    puts("|       Call Commands:         |   Buddy, IM & Presence:  |     Account:      |");
    puts("|                              |                          |                   |");
    puts("|  m  Make new call            | +b  Add new buddy        | +a  Add new accnt.|");
    puts("|  M  Make multiple calls      | -b  Delete buddy         | -a  Delete accnt. |");
    puts("|  a  Answer call              |  i  Send IM              | !a  Modify accnt. |");
    puts("|  h  Hangup call  (ha=all)    |  s  Subscribe presence   | rr  (Re-)register |");
    puts("|  H  Hold call                |  u  Unsubscribe presence | ru  Unregister    |");
    puts("|  o Toggle call SDP offer     |  D  Subscribe dlg event  |                   |");
    puts("|                              |  Du Unsub dlg event      |                   |");
    puts("|  v  re-inVite (release hold) |  t  Toggle online status |  >  Cycle next ac.|");
    puts("|  U  send UPDATE              |  T  Set online status    |  <  Cycle prev ac.|");
    puts("| ],[ Select next/prev call    +--------------------------+-------------------+");
    puts("|  x  Xfer call                |      Media Commands:     |  Status & Config: |");
    puts("|  X  Xfer with Replaces       |                          |                   |");
    puts("|  #  Send RFC 2833 DTMF       | cl  List ports           |  d  Dump status   |");
    puts("|  *  Send DTMF with INFO      | cc  Connect port         | dd  Dump detailed |");
    puts("| rt  Send real-time text      | cd  Disconnect port      | dc  Dump config   |");
    puts("| dq  Dump curr. call quality  |  V  Adjust audio Volume  |  f  Save config   |");
    puts("|  S  Send arbitrary REQUEST   | Cp  Codec priorities     |                   |");
    puts("+-----------------------------------------------------------------------------+");
#if PJSUA_HAS_VIDEO
    puts("| Video: \"vid help\" for more info                                             |");
    puts("+-----------------------------------------------------------------------------+");
#endif
    puts("|  q  QUIT      L  ReLoad       I  IP change     n  detect NAT type           |");
    puts("|  sleep MS     echo [0|1|txt]                                                |");
    puts("+=============================================================================+");

    i = pjsua_call_get_count();
    printf("You have %d active call%s\n", i, (i>1?"s":""));

    if (current_call != PJSUA_INVALID_ID) {
        pjsua_call_info ci;
        if (pjsua_call_get_info(current_call, &ci)==PJ_SUCCESS)
            printf("Current call id=%d to %.*s [%.*s]\n", current_call,
                   (int)ci.remote_info.slen, ci.remote_info.ptr,
                   (int)ci.state_text.slen, ci.state_text.ptr);
    }
}

/* Help screen for video */
#if PJSUA_HAS_VIDEO
static void vid_show_help()
{
    pj_bool_t vid_enabled = (app_config.vid.vid_cnt > 0);

    puts("+=============================================================================+");
    puts("|                            Video commands:                                  |");
    puts("|                                                                             |");
    puts("| vid help                  Show this help screen                             |");
    puts("| vid enable|disable        Enable or disable video in next offer/answer      |");
    puts("| vid acc show              Show current account video settings               |");
    puts("| vid acc autorx on|off     Automatically show incoming video on/off          |");
    puts("| vid acc autotx on|off     Automatically offer video on/off                  |");
    puts("| vid acc cap ID            Set default capture device for current acc        |");
    puts("| vid acc rend ID           Set default renderer device for current acc       |");
    puts("| vid call rx on|off N      Enable/disable video RX for stream N in curr call |");
    puts("| vid call tx on|off N      Enable/disable video TX for stream N in curr call |");
    puts("| vid call add              Add video stream for current call                 |");
    puts("| vid call enable|disable N Enable/disable stream #N in current call          |");
    puts("| vid call cap N ID         Set capture dev ID for stream #N in current call  |");
    puts("| vid dev list              List all video devices                            |");
    puts("| vid dev refresh           Refresh video device list                         |");
    puts("| vid dev prev on|off ID    Enable/disable preview for specified device ID    |");
    puts("| vid codec list            List video codecs                                 |");
    puts("| vid codec prio ID PRIO    Set codec ID priority to PRIO                     |");
    puts("| vid codec fps ID NUM DEN  Set codec ID framerate to (NUM/DEN) fps           |");
    puts("| vid codec bw ID AVG MAX   Set codec ID bitrate to AVG & MAX kbps            |");
    puts("| vid codec size ID W H     Set codec ID size/resolution to W x H             |");
    puts("| vid win list              List all active video windows                     |");
    puts("| vid win arrange           Auto arrange windows                              |");
    puts("| vid win show|hide ID      Show/hide the specified video window ID           |");
    puts("| vid win move ID X Y       Move window ID to position X,Y                    |");
    puts("| vid win resize ID w h     Resize window ID to the specified width, height   |");
    puts("| vid win full off|on|dt ID Set fullscreen off/on/desktop for window ID       |");
    puts("| vid conf list             List all video ports in video conference bridge   |");
    puts("| vid conf cc P Q           Connect port P to Q in the video conf bridge      |");
    puts("| vid conf cd P Q           Disconnect port P to Q in the video conf bridge   |");
    puts("+=============================================================================+");
    printf("| Video will be %s in the next offer/answer %s                            |\n",
           (vid_enabled? "enabled" : "disabled"), (vid_enabled? " " : ""));
    puts("+=============================================================================+");
}

static void vid_handle_menu(char *menuin)
{
    char *argv[8] = {NULL};
    int argc = 0;

    /* Tokenize */
    argv[argc] = strtok(menuin, " \t\r\n");
    while (argv[argc] && *argv[argc]) {
        argc++;
        argv[argc] = strtok(NULL, " \t\r\n");
    }

    if (argc == 1 || strcmp(argv[1], "help")==0) {
        vid_show_help();
    } else if (argc == 2 && (strcmp(argv[1], "enable")==0 ||
                             strcmp(argv[1], "disable")==0))
    {
        pj_bool_t enabled = (strcmp(argv[1], "enable")==0);
        app_config.vid.vid_cnt = (enabled ? 1 : 0);
        PJ_LOG(3,(THIS_FILE, "Video will be %s in next offer/answer",
                  (enabled?"enabled":"disabled")));
    } else if (strcmp(argv[1], "acc")==0) {
        pjsua_acc_config acc_cfg;
        pj_bool_t changed = PJ_FALSE;
        pj_pool_t *tmp_pool = pjsua_pool_create("tmp-pjsua", 1000, 1000);

        pjsua_acc_get_config(current_acc, tmp_pool, &acc_cfg);

        if (argc == 3 && strcmp(argv[2], "show")==0) {
            app_config_show_video(current_acc, &acc_cfg);
        } else if (argc == 4 && strcmp(argv[2], "autorx")==0) {
            int on = (strcmp(argv[3], "on")==0);
            acc_cfg.vid_in_auto_show = on;
            changed = PJ_TRUE;
        } else if (argc == 4 && strcmp(argv[2], "autotx")==0) {
            int on = (strcmp(argv[3], "on")==0);
            acc_cfg.vid_out_auto_transmit = on;
            changed = PJ_TRUE;
        } else if (argc == 4 && strcmp(argv[2], "cap")==0) {
            int dev = atoi(argv[3]);
            acc_cfg.vid_cap_dev = dev;
            changed = PJ_TRUE;
        } else if (argc == 4 && strcmp(argv[2], "rend")==0) {
            int dev = atoi(argv[3]);
            acc_cfg.vid_rend_dev = dev;
            changed = PJ_TRUE;
        } else {
            pj_pool_release(tmp_pool);
            goto on_error;
        }

        if (changed) {
            pj_status_t status = pjsua_acc_modify(current_acc, &acc_cfg);
            if (status != PJ_SUCCESS)
                PJ_PERROR(1,(THIS_FILE, status, "Error modifying account %d",
                             current_acc));
        }
        pj_pool_release(tmp_pool);

    } else if (strcmp(argv[1], "call")==0) {
        pjsua_call_vid_strm_op_param param;
        pj_status_t status = PJ_SUCCESS;

        pjsua_call_vid_strm_op_param_default(&param);

        if (argc == 5 && strcmp(argv[2], "rx")==0) {
            pjsua_stream_info si;
            pj_bool_t on = (strcmp(argv[3], "on") == 0);

            param.med_idx = atoi(argv[4]);
            if (pjsua_call_get_stream_info(current_call, param.med_idx, &si) ||
                si.type != PJMEDIA_TYPE_VIDEO)
            {
                PJ_PERROR(1,(THIS_FILE, PJ_EINVAL, "Invalid stream"));
                return;
            }

            if (on) param.dir = (si.info.vid.dir | PJMEDIA_DIR_DECODING);
            else param.dir = (si.info.vid.dir & PJMEDIA_DIR_ENCODING);

            status = pjsua_call_set_vid_strm(current_call,
                                             PJSUA_CALL_VID_STRM_CHANGE_DIR,
                                             &param);
        }
        else if (argc == 5 && strcmp(argv[2], "tx")==0) {
            pj_bool_t on = (strcmp(argv[3], "on") == 0);
            pjsua_call_vid_strm_op op = on? PJSUA_CALL_VID_STRM_START_TRANSMIT :
                                            PJSUA_CALL_VID_STRM_STOP_TRANSMIT;

            param.med_idx = atoi(argv[4]);

            status = pjsua_call_set_vid_strm(current_call, op, &param);
        }
        else if (argc == 3 && strcmp(argv[2], "add")==0) {
            status = pjsua_call_set_vid_strm(current_call,
                                             PJSUA_CALL_VID_STRM_ADD, NULL);
        }
        else if (argc >= 3 &&
                 (strcmp(argv[2], "disable")==0 || strcmp(argv[2], "enable")==0))
        {
            pj_bool_t enable = (strcmp(argv[2], "enable") == 0);
            pjsua_call_vid_strm_op op = enable? PJSUA_CALL_VID_STRM_CHANGE_DIR :
                                                PJSUA_CALL_VID_STRM_REMOVE;

            param.med_idx = argc >= 4? atoi(argv[3]) : -1;
            param.dir = PJMEDIA_DIR_ENCODING_DECODING;
            status = pjsua_call_set_vid_strm(current_call, op, &param);
        }
        else if (argc >= 3 && strcmp(argv[2], "cap")==0) {
            param.med_idx = argc >= 4? atoi(argv[3]) : -1;
            param.cap_dev = argc >= 5? atoi(argv[4]) : PJMEDIA_VID_DEFAULT_CAPTURE_DEV;
            status = pjsua_call_set_vid_strm(current_call,
                                             PJSUA_CALL_VID_STRM_CHANGE_CAP_DEV,
                                             &param);
        } else
            goto on_error;

        if (status != PJ_SUCCESS) {
            PJ_PERROR(1,(THIS_FILE, status, "Error modifying video stream"));
        }

    } else if (argc >= 3 && strcmp(argv[1], "dev")==0) {
        if (strcmp(argv[2], "list")==0) {
            vid_list_devs();
        } else if (strcmp(argv[2], "refresh")==0) {
            pjmedia_vid_dev_refresh();
        } else if (strcmp(argv[2], "prev")==0) {
            if (argc != 5) {
                goto on_error;
            } else {
                pj_bool_t on = (strcmp(argv[3], "on") == 0);
                int dev_id = atoi(argv[4]);
                if (on) {
                    pjsua_vid_preview_param param;

                    pjsua_vid_preview_param_default(&param);
                    param.wnd_flags = PJMEDIA_VID_DEV_WND_BORDER |
                                      PJMEDIA_VID_DEV_WND_RESIZABLE;
                    pjsua_vid_preview_start(dev_id, &param);
                    arrange_window(pjsua_vid_preview_get_win(dev_id));
                } else {
                    pjsua_vid_win_id wid;
                    wid = pjsua_vid_preview_get_win(dev_id);
                    if (wid != PJSUA_INVALID_ID) {
                        /* Preview window hiding once it is stopped is
                         * responsibility of app */
                        pjsua_vid_win_set_show(wid, PJ_FALSE);
                        pjsua_vid_preview_stop(dev_id);
                    }
                }
            }
        } else
            goto on_error;
    } else if (strcmp(argv[1], "win")==0) {
        pj_status_t status = PJ_SUCCESS;

        if (argc==3 && strcmp(argv[2], "list")==0) {
            pjsua_vid_win_id wids[PJSUA_MAX_VID_WINS];
            unsigned i, cnt = PJ_ARRAY_SIZE(wids);

            pjsua_vid_enum_wins(wids, &cnt);

            PJ_LOG(3,(THIS_FILE, "Found %d video windows:", cnt));
            PJ_LOG(3,(THIS_FILE, "WID show    pos       size"));
            PJ_LOG(3,(THIS_FILE, "------------------------------"));
            for (i = 0; i < cnt; ++i) {
                pjsua_vid_win_info wi;
                pjsua_vid_win_get_info(wids[i], &wi);
                PJ_LOG(3,(THIS_FILE, "%3d   %c  (%d,%d)  %dx%d",
                          wids[i], (wi.show?'Y':'N'), wi.pos.x, wi.pos.y,
                          wi.size.w, wi.size.h));
            }
        } else if (argc==4 && (strcmp(argv[2], "show")==0 ||
                               strcmp(argv[2], "hide")==0))
        {
            pj_bool_t show = (strcmp(argv[2], "show")==0);
            pjsua_vid_win_id wid = atoi(argv[3]);
            status = pjsua_vid_win_set_show(wid, show);
        } else if (argc==6 && strcmp(argv[2], "move")==0) {
            pjsua_vid_win_id wid = atoi(argv[3]);
            pjmedia_coord pos;

            pos.x = atoi(argv[4]);
            pos.y = atoi(argv[5]);
            status = pjsua_vid_win_set_pos(wid, &pos);
        } else if (argc==6 && strcmp(argv[2], "resize")==0) {
            pjsua_vid_win_id wid = atoi(argv[3]);
            pjmedia_rect_size size;

            size.w = atoi(argv[4]);
            size.h = atoi(argv[5]);
            status = pjsua_vid_win_set_size(wid, &size);
        } else if (argc==3 && strcmp(argv[2], "arrange")==0) {
            arrange_window(PJSUA_INVALID_ID);
        } else if (argc==5 && (strcmp(argv[2], "full")==0))
        {
            pjsua_vid_win_id wid = atoi(argv[4]);
            pjmedia_vid_dev_fullscreen_flag mode = PJMEDIA_VID_DEV_WINDOWED;
            if (strcmp(argv[3], "on")==0)
                mode = PJMEDIA_VID_DEV_FULLSCREEN;
            else if (strcmp(argv[3], "dt")==0)
                mode = PJMEDIA_VID_DEV_FULLSCREEN_DESKTOP;
            status = pjsua_vid_win_set_fullscreen(wid, mode);
        } else
            goto on_error;

        if (status != PJ_SUCCESS) {
            PJ_PERROR(1,(THIS_FILE, status, "Window operation error"));
        }

    } else if (strcmp(argv[1], "codec")==0) {
        pjsua_codec_info ci[PJMEDIA_CODEC_MGR_MAX_CODECS];
        unsigned count = PJ_ARRAY_SIZE(ci);
        pj_status_t status;

        if (argc==3 && strcmp(argv[2], "list")==0) {
            status = pjsua_vid_enum_codecs(ci, &count);
            if (status != PJ_SUCCESS) {
                PJ_PERROR(1,(THIS_FILE, status, "Error enumerating codecs"));
            } else {
                unsigned i;
                PJ_LOG(3,(THIS_FILE, "Found %d video codecs:", count));
                PJ_LOG(3,(THIS_FILE, "codec id      prio  fps    bw(kbps)   size"));
                PJ_LOG(3,(THIS_FILE, "------------------------------------------"));
                for (i=0; i<count; ++i) {
                    pjmedia_vid_codec_param cp;
                    pjmedia_video_format_detail *vfd;

                    status = pjsua_vid_codec_get_param(&ci[i].codec_id, &cp);
                    if (status != PJ_SUCCESS)
                        continue;

                    vfd = pjmedia_format_get_video_format_detail(&cp.enc_fmt,
                                                                 PJ_TRUE);
                    PJ_LOG(3,(THIS_FILE, "%.*s%.*s %3d %7.2f  %4d/%4d  %dx%d",
                              (int)ci[i].codec_id.slen, ci[i].codec_id.ptr,
                              13-(int)ci[i].codec_id.slen, "                ",
                              ci[i].priority,
                              (vfd->fps.num*1.0/vfd->fps.denum),
                              vfd->avg_bps/1000, vfd->max_bps/1000,
                              vfd->size.w, vfd->size.h));
                }
            }
        } else if (argc==5 && strcmp(argv[2], "prio")==0) {
            pj_str_t cid;
            int prio;
            cid = pj_str(argv[3]);
            prio = atoi(argv[4]);
            status = pjsua_vid_codec_set_priority(&cid, (pj_uint8_t)prio);
            if (status != PJ_SUCCESS)
                PJ_PERROR(1,(THIS_FILE, status, "Set codec priority error"));
        } else if (argc==6 && strcmp(argv[2], "fps")==0) {
            pjmedia_vid_codec_param cp;
            pj_str_t cid;
            int M, N;
            cid = pj_str(argv[3]);
            M = atoi(argv[4]);
            N = atoi(argv[5]);
            status = pjsua_vid_codec_get_param(&cid, &cp);
            if (status == PJ_SUCCESS) {
                cp.enc_fmt.det.vid.fps.num = M;
                cp.enc_fmt.det.vid.fps.denum = N;
                status = pjsua_vid_codec_set_param(&cid, &cp);
            }
            if (status != PJ_SUCCESS)
                PJ_PERROR(1,(THIS_FILE, status, "Set codec framerate error"));
        } else if (argc==6 && strcmp(argv[2], "bw")==0) {
            pjmedia_vid_codec_param cp;
            pj_str_t cid;
            int M, N;
            cid = pj_str(argv[3]);
            M = atoi(argv[4]);
            N = atoi(argv[5]);
            status = pjsua_vid_codec_get_param(&cid, &cp);
            if (status == PJ_SUCCESS) {
                cp.enc_fmt.det.vid.avg_bps = M * 1000;
                cp.enc_fmt.det.vid.max_bps = N * 1000;
                status = pjsua_vid_codec_set_param(&cid, &cp);
            }
            if (status != PJ_SUCCESS)
                PJ_PERROR(1,(THIS_FILE, status, "Set codec bitrate error"));
        } else if (argc==6 && strcmp(argv[2], "size")==0) {
            pjmedia_vid_codec_param cp;
            pj_str_t cid;
            int M, N;
            cid = pj_str(argv[3]);
            M = atoi(argv[4]);
            N = atoi(argv[5]);
            status = pjsua_vid_codec_get_param(&cid, &cp);
            if (status == PJ_SUCCESS) {
                cp.enc_fmt.det.vid.size.w = M;
                cp.enc_fmt.det.vid.size.h = N;
                status = pjsua_vid_codec_set_param(&cid, &cp);
            }
            if (status != PJ_SUCCESS)
                PJ_PERROR(1,(THIS_FILE, status, "Set codec size error"));
        } else
            goto on_error;
    } else if (strcmp(argv[1], "conf")==0) {
        pj_status_t status;

        if (argc==3 && strcmp(argv[2], "list")==0) {
            pjsua_conf_port_id id[100];
            unsigned count = PJ_ARRAY_SIZE(id);

            status = pjsua_vid_conf_enum_ports(id, &count);
            if (status != PJ_SUCCESS) {
                PJ_PERROR(1,(THIS_FILE, status,
                             "Failed enumerating video conf bridge ports"));
            } else {
                unsigned i;
                printf(" Video conference has %d ports:\n", count);
                printf(" id name                   format               rx-from      tx-to \n");
                printf(" ------------------------------------------------------------------\n");
                for (i=0; i<count; ++i) {
                    char li_list[PJSUA_MAX_CALLS*4];
                    char tr_list[PJSUA_MAX_CALLS*4];
                    char s[32];
                    unsigned j;
                    pjsua_vid_conf_port_info info;
                    pjmedia_rect_size *size;
                    pjmedia_ratio *fps;

                    pjsua_vid_conf_get_port_info(id[i], &info);
                    size = &info.format.det.vid.size;
                    fps = &info.format.det.vid.fps;

                    li_list[0] = '\0';
                    for (j=0; j<info.listener_cnt; ++j) {
                        char str_info[10];
                        pj_ansi_snprintf(str_info, sizeof(str_info), "%d%s",
                                         info.listeners[j],
                                         (j==info.listener_cnt-1)?"":",");
                        pj_ansi_strxcat(li_list, str_info, sizeof(li_list));
                    }
                    tr_list[0] = '\0';
                    for (j=0; j<info.transmitter_cnt; ++j) {
                        char str_info[10];
                        pj_ansi_snprintf(str_info, sizeof(str_info), "%d%s",
                                         info.transmitters[j],
                                         (j==info.transmitter_cnt-1)?"":",");
                        pj_ansi_strxcat(tr_list, str_info, sizeof(tr_list));
                    }
                    pjmedia_fourcc_name(info.format.id, s);
                    s[4] = ' ';
                    pj_ansi_snprintf(s+5, sizeof(s)-5, "%dx%d@%.1f",
                                     size->w, size->h,
                                     (float)(fps->num*1.0/fps->denum));
                    printf("%3d %.*s%.*s %s%.*s %s%.*s %s\n",
                           id[i],
                           (int)info.name.slen, info.name.ptr,
                           22-(int)info.name.slen, "                   ",
                           s,
                           20-(int)pj_ansi_strlen(s), "                    ",
                           tr_list,
                           12-(int)pj_ansi_strlen(tr_list), "            ",
                           li_list);
                }
            }
        } else if (argc==5 && strcmp(argv[2], "cc")==0) {
            int P, Q;
            P = atoi(argv[3]);
            Q = atoi(argv[4]);
            pjsua_vid_conf_connect(P, Q, NULL);
        } else if (argc==5 && strcmp(argv[2], "cd")==0) {
            int P, Q;
            P = atoi(argv[3]);
            Q = atoi(argv[4]);
            pjsua_vid_conf_disconnect(P, Q);
        } else {
            goto on_error;
        }
    } else
        goto on_error;

    return;

on_error:
    PJ_LOG(1,(THIS_FILE, "Invalid command, use 'vid help'"));
}

#endif /* PJSUA_HAS_VIDEO */

/** UI Command **/
static void ui_make_new_call()
{
    char buf[128];
    pjsua_msg_data msg_data_;
    input_result result;
    pj_str_t tmp;
    pj_bool_t loop = PJ_FALSE;

    printf("(You currently have %d calls)\n", pjsua_call_get_count());

    ui_input_url("Make call", buf, sizeof(buf), &result, PJ_TRUE);
    do {
        if (result.nb_result != PJSUA_APP_NO_NB) {
            if (result.nb_result == -1) {
                loop = PJ_TRUE;
                result.nb_result = 1;
            }
            if (result.nb_result > (int)pjsua_get_buddy_count()) break;

            if (result.nb_result == 0) {
                puts("You can't do that with make call!");
                return;
            } else {
                pjsua_buddy_info binfo;
                pjsua_buddy_get_info(result.nb_result-1, &binfo);
                tmp.ptr = buf;
                pj_strncpy(&tmp, &binfo.uri, sizeof(buf));
            }

        } else if (result.uri_result) {
            tmp = pj_str(result.uri_result);
        } else {
            tmp.slen = 0;
        }

        pjsua_msg_data_init(&msg_data_);
        TEST_MULTIPART(&msg_data_);
        if (app_config.enable_loam) {
            call_opt.flag |= PJSUA_CALL_NO_SDP_OFFER;
        }
        pjsua_call_make_call(current_acc, &tmp, &call_opt, NULL,
                             &msg_data_, &current_call);

        result.nb_result++;
    } while (loop);
}

static void ui_make_multi_call()
{
    char menuin[32];
    int count;
    char buf[128];
    input_result result;
    pj_str_t tmp;
    int i;

    printf("(You currently have %d calls)\n", pjsua_call_get_count());

    if (!simple_input("Number of calls", menuin, sizeof(menuin)))
        return;

    count = my_atoi(menuin);
    if (count < 1)
        return;

    ui_input_url("Make call", buf, sizeof(buf), &result, PJ_FALSE);
    if (result.nb_result != PJSUA_APP_NO_NB) {
        pjsua_buddy_info binfo;
        if (result.nb_result == -1 || result.nb_result == 0) {
            puts("You can't do that with make call!");
            return;
        }
        pjsua_buddy_get_info(result.nb_result-1, &binfo);
        tmp.ptr = buf;
        pj_strncpy(&tmp, &binfo.uri, sizeof(buf));
    } else {
        tmp = pj_str(result.uri_result);
    }

    if (app_config.enable_loam) {
        call_opt.flag |= PJSUA_CALL_NO_SDP_OFFER;
    }

    for (i=0; i<my_atoi(menuin); ++i) {
        pj_status_t status;

        status = pjsua_call_make_call(current_acc, &tmp, &call_opt, NULL,
            NULL, NULL);
        if (status != PJ_SUCCESS)
            break;
    }
}

static void ui_detect_nat_type()
{
    int i = pjsua_detect_nat_type();
    if (i != PJ_SUCCESS)
        pjsua_perror(THIS_FILE, "Error", i);
}

static void ui_send_instant_message()
{
    char *uri = NULL;
    /* i is for call index to send message, if any */
    int i = -1;
    input_result result;
    char buf[128];
    char text[128];
    pj_str_t tmp;

    /* Input destination. */
    ui_input_url("Send IM to", buf, sizeof(buf), &result, PJ_FALSE);
    if (result.nb_result != PJSUA_APP_NO_NB) {

        if (result.nb_result == -1) {
            puts("You can't send broadcast IM like that!");
            return;

        } else if (result.nb_result == 0) {
            i = current_call;
        } else {
            pjsua_buddy_info binfo;
            pjsua_buddy_get_info(result.nb_result-1, &binfo);
            tmp.ptr = buf;
            pj_strncpy_with_null(&tmp, &binfo.uri, sizeof(buf));
            uri = buf;
        }

    } else if (result.uri_result) {
        uri = result.uri_result;
    }


    /* Send typing indication. */
    if (!app_config.no_mci) {
        if (i != -1)
            pjsua_call_send_typing_ind(i, PJ_TRUE, NULL);
        else {
            pj_str_t tmp_uri = pj_str(uri);
            pjsua_im_typing(current_acc, &tmp_uri, PJ_TRUE, NULL);
        }
    }

    /* Input the IM . */
    if (!simple_input("Message", text, sizeof(text))) {
        if (!app_config.no_mci) {
            /*
            * Cancelled.
            * Send typing notification too, saying we're not typing.
            */
            if (i != -1)
                pjsua_call_send_typing_ind(i, PJ_FALSE, NULL);
            else {
                pj_str_t tmp_uri = pj_str(uri);
                pjsua_im_typing(current_acc, &tmp_uri, PJ_FALSE, NULL);
            }
            return;
        }
    }

    tmp = pj_str(text);

    /* Send the IM */
    if (i != -1)
        pjsua_call_send_im(i, NULL, &tmp, NULL, NULL);
    else {
        pj_str_t tmp_uri = pj_str(uri);
        pjsua_im_send(current_acc, &tmp_uri, NULL, &tmp, NULL, NULL);
    }
}

static void ui_answer_call()
{
    pjsua_call_info call_info;
    char buf[128];
    pjsua_msg_data msg_data_;

    if (current_call != -1) {
        pjsua_call_get_info(current_call, &call_info);
    } else {
        /* Make compiler happy */
        call_info.role = PJSIP_ROLE_UAC;
        call_info.state = PJSIP_INV_STATE_DISCONNECTED;
    }

    if (current_call == -1 ||
        call_info.role != PJSIP_ROLE_UAS ||
        call_info.state >= PJSIP_INV_STATE_CONNECTING)
    {
        puts("No pending incoming call");
        fflush(stdout);
        return;

    } else {
        int st_code;
        char contact[120];
        pj_str_t hname = { "Contact", 7 };
        pj_str_t hvalue;
        pjsip_generic_string_hdr hcontact;

        if (!simple_input("Answer with code (100-699)", buf, sizeof(buf)))
            return;

        st_code = my_atoi(buf);
        if (st_code < 100)
            return;

        pjsua_msg_data_init(&msg_data_);

        if (st_code/100 == 3) {
            if (!simple_input("Enter URL to be put in Contact",
                contact, sizeof(contact)))
                return;
            hvalue = pj_str(contact);
            pjsip_generic_string_hdr_init2(&hcontact, &hname, &hvalue);

            pj_list_push_back(&msg_data_.hdr_list, &hcontact);
        }

        /*
        * Must check again!
        * Call may have been disconnected while we're waiting for
        * keyboard input.
        */
        if (current_call == -1) {
            puts("Call has been disconnected");
            fflush(stdout);
            return;
        }

        pjsua_call_answer2(current_call, &call_opt, st_code, NULL, &msg_data_);
    }
}

static void ui_hangup_call(char menuin[])
{
    if (current_call == -1) {
        puts("No current call");
        fflush(stdout);
        return;

    } else if (menuin[1] == 'a') {
        /* Hangup all calls */
        pjsua_call_hangup_all();
    } else {
        /* Hangup current calls */
        pjsua_call_hangup(current_call, 0, NULL, NULL);
    }
}

static void ui_cycle_dialog(char menuin[])
{
    if (menuin[0] == ']') {
        find_next_call();

    } else {
        find_prev_call();
    }

    if (current_call != -1) {
        pjsua_call_info call_info;

        pjsua_call_get_info(current_call, &call_info);
        PJ_LOG(3,(THIS_FILE,"Current dialog: %.*s",
            (int)call_info.remote_info.slen,
            call_info.remote_info.ptr));

    } else {
        PJ_LOG(3,(THIS_FILE,"No current dialog"));
    }
}

static void ui_cycle_account()
{
    int i;
    char buf[128];

    if (!simple_input("Enter account ID to select", buf, sizeof(buf)))
        return;

    i = my_atoi(buf);
    if (pjsua_acc_is_valid(i)) {
        pjsua_acc_set_default(i);
        PJ_LOG(3,(THIS_FILE, "Current account changed to %d", i));
    } else {
        PJ_LOG(3,(THIS_FILE, "Invalid account id %d", i));
    }
}

static void ui_add_buddy()
{
    char buf[128];
    pjsua_buddy_config buddy_cfg;
    pjsua_buddy_id buddy_id;
    pj_status_t status;

    if (!simple_input("Enter buddy's URI:", buf, sizeof(buf)))
        return;

    if (pjsua_verify_url(buf) != PJ_SUCCESS) {
        printf("Invalid URI '%s'\n", buf);
        return;
    }

    pj_bzero(&buddy_cfg, sizeof(pjsua_buddy_config));

    buddy_cfg.uri = pj_str(buf);
    /* Only one subscription can be active, so we need to disable this
     * to allow user to choose between presence or dialog event.
     */
    // buddy_cfg.subscribe = PJ_TRUE;

    status = pjsua_buddy_add(&buddy_cfg, &buddy_id);
    if (status == PJ_SUCCESS) {
        printf("New buddy '%s' added at index %d\n",
            buf, buddy_id+1);
    }
}

static void ui_add_account(pjsua_transport_config *rtp_cfg)
{
    char id[80], registrar[80], realm[80], uname[80], passwd[30];
    pjsua_acc_config acc_cfg;
    pj_status_t status;

    if (!simple_input("Your SIP URL:", id, sizeof(id)))
        return;
    if (!simple_input("URL of the registrar:", registrar, sizeof(registrar)))
        return;
    if (!simple_input("Auth Realm:", realm, sizeof(realm)))
        return;
    if (!simple_input("Auth Username:", uname, sizeof(uname)))
        return;
    if (!simple_input("Auth Password:", passwd, sizeof(passwd)))
        return;

    pjsua_acc_config_default(&acc_cfg);
    acc_cfg.id = pj_str(id);
    acc_cfg.reg_uri = pj_str(registrar);
    acc_cfg.cred_count = 1;
    acc_cfg.cred_info[0].scheme = pjsip_DIGEST_STR;
    acc_cfg.cred_info[0].realm = pj_str(realm);
    acc_cfg.cred_info[0].username = pj_str(uname);
    acc_cfg.cred_info[0].data_type = 0;
    acc_cfg.cred_info[0].data = pj_str(passwd);

    acc_cfg.rtp_cfg = *rtp_cfg;
    acc_cfg.txt_red_level = app_config.txt_red_level;
    app_config_init_video(&acc_cfg);

    status = pjsua_acc_add(&acc_cfg, PJ_TRUE, NULL);
    if (status != PJ_SUCCESS) {
        pjsua_perror(THIS_FILE, "Error adding new account", status);
    }
}

static void ui_delete_buddy()
{
    char buf[128];
    int i;

    if (!simple_input("Enter buddy ID to delete", buf, sizeof(buf)))
        return;

    i = my_atoi(buf) - 1;

    if (!pjsua_buddy_is_valid(i)) {
        printf("Invalid buddy id %d\n", i);
    } else {
        pjsua_buddy_del(i);
        printf("Buddy %d deleted\n", i);
    }
}

static void ui_delete_account()
{
    char buf[128];
    int i;

    if (!simple_input("Enter account ID to delete", buf, sizeof(buf)))
        return;

    i = my_atoi(buf);

    if (!pjsua_acc_is_valid(i)) {
        printf("Invalid account id %d\n", i);
    } else {
        pjsua_acc_del(i);
        printf("Account %d deleted\n", i);
    }
}

static void ui_unset_loam_mode()
{
    app_config.enable_loam = PJ_FALSE;
}

static void ui_call_hold()
{
    if (current_call != -1) {
        pjsua_call_set_hold(current_call, NULL);
    } else {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    }
}

static void ui_call_reinvite()
{
    call_opt.flag |= PJSUA_CALL_UNHOLD;
    pjsua_call_reinvite2(current_call, &call_opt, NULL);
}

static void ui_send_update()
{
    if (current_call != -1) {
        if (app_config.enable_loam) {
            call_opt.flag |= PJSUA_CALL_NO_SDP_OFFER;
        }
        pjsua_call_update2(current_call, &call_opt, NULL);
    } else {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    }
}

/*
 * Change codec priorities.
 */
static void ui_manage_codec_prio()
{
    pjsua_codec_info c[32];
    unsigned i, count = PJ_ARRAY_SIZE(c);
    char input[32];
    char *codec, *prio;
    pj_str_t id;
    int new_prio;
    pj_status_t status;

    printf("List of audio codecs:\n");
    pjsua_enum_codecs(c, &count);
    for (i=0; i<count; ++i) {
        printf("  %d\t%.*s\n", c[i].priority, (int)c[i].codec_id.slen,
                               c[i].codec_id.ptr);
    }

#if PJSUA_HAS_VIDEO
    puts("");
    printf("List of video codecs:\n");
    pjsua_vid_enum_codecs(c, &count);
    for (i=0; i<count; ++i) {
        printf("  %d\t%.*s%s%.*s\n", c[i].priority,
                                     (int)c[i].codec_id.slen,
                                     c[i].codec_id.ptr,
                                     c[i].desc.slen? " - ":"",
                                     (int)c[i].desc.slen,
                                     c[i].desc.ptr);
    }
#endif

    puts("");
    puts("Enter codec id and its new priority (e.g. \"speex/16000 200\", "
         """\"H263 200\"),");
    puts("or empty to cancel.");

    printf("Codec name (\"*\" for all) and priority: ");
    if (fgets(input, sizeof(input), stdin) == NULL)
        return;
    if (input[0]=='\r' || input[0]=='\n') {
        puts("Done");
        return;
    }

    codec = strtok(input, " \t\r\n");
    prio = strtok(NULL, " \r\n");

    if (!codec || !prio) {
        puts("Invalid input");
        return;
    }

    new_prio = atoi(prio);
    if (new_prio < 0)
        new_prio = 0;
    else if (new_prio > PJMEDIA_CODEC_PRIO_HIGHEST)
        new_prio = PJMEDIA_CODEC_PRIO_HIGHEST;

    status = pjsua_codec_set_priority(pj_cstr(&id, codec),
                                      (pj_uint8_t)new_prio);
#if PJSUA_HAS_VIDEO
    if (status != PJ_SUCCESS) {
        status = pjsua_vid_codec_set_priority(pj_cstr(&id, codec),
                                              (pj_uint8_t)new_prio);
    }
#endif
    if (status != PJ_SUCCESS)
        pjsua_perror(THIS_FILE, "Error setting codec priority", status);
}

static void ui_call_transfer(pj_bool_t no_refersub)
{
    if (current_call == -1) {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    } else {
        int call = current_call;
        char buf[128];
        pjsip_generic_string_hdr refer_sub;
        pj_str_t STR_REFER_SUB = { "Refer-Sub", 9 };
        pj_str_t STR_FALSE = { "false", 5 };
        pjsua_call_info ci;
        input_result result;
        pjsua_msg_data msg_data_;

        pjsua_call_get_info(current_call, &ci);
        printf("Transferring current call [%d] %.*s\n", current_call,
               (int)ci.remote_info.slen, ci.remote_info.ptr);

        ui_input_url("Transfer to URL", buf, sizeof(buf), &result, PJ_FALSE);

        /* Check if call is still there. */

        if (call != current_call) {
            puts("Call has been disconnected");
            return;
        }

        pjsua_msg_data_init(&msg_data_);
        if (no_refersub) {
            /* Add Refer-Sub: false in outgoing REFER request */
            pjsip_generic_string_hdr_init2(&refer_sub, &STR_REFER_SUB,
                &STR_FALSE);
            pj_list_push_back(&msg_data_.hdr_list, &refer_sub);
        }
        if (result.nb_result != PJSUA_APP_NO_NB) {
            if (result.nb_result == -1 || result.nb_result == 0) {
                puts("You can't do that with transfer call!");
            } else {
                pjsua_buddy_info binfo;
                pjsua_buddy_get_info(result.nb_result-1, &binfo);
                pjsua_call_xfer( current_call, &binfo.uri, &msg_data_);
            }

        } else if (result.uri_result) {
            pj_str_t tmp;
            tmp = pj_str(result.uri_result);
            pjsua_call_xfer( current_call, &tmp, &msg_data_);
        }
    }
}

static void ui_call_transfer_replaces(pj_bool_t no_refersub)
{
    if (current_call == -1) {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    } else {
        int call = current_call;
        int dst_call;
        pjsip_generic_string_hdr refer_sub;
        pj_str_t STR_REFER_SUB = { "Refer-Sub", 9 };
        pj_str_t STR_FALSE = { "false", 5 };
        pjsua_call_id ids[PJSUA_MAX_CALLS];
        pjsua_call_info ci;
        pjsua_msg_data msg_data_;
        char buf[128];
        unsigned i, count;

        count = PJ_ARRAY_SIZE(ids);
        pjsua_enum_calls(ids, &count);

        if (count <= 1) {
            puts("There are no other calls");
            return;
        }

        pjsua_call_get_info(current_call, &ci);
        printf("Transfer call [%d] %.*s to one of the following:\n",
               current_call,
               (int)ci.remote_info.slen, ci.remote_info.ptr);

        for (i=0; i<count; ++i) {
            pjsua_call_info call_info;

            if (ids[i] == call)
                continue;

            pjsua_call_get_info(ids[i], &call_info);
            printf("%d  %.*s [%.*s]\n",
                ids[i],
                (int)call_info.remote_info.slen,
                call_info.remote_info.ptr,
                (int)call_info.state_text.slen,
                call_info.state_text.ptr);
        }

        if (!simple_input("Enter call number to be replaced", buf, sizeof(buf)))
            return;

        dst_call = my_atoi(buf);

        /* Check if call is still there. */

        if (call != current_call) {
            puts("Call has been disconnected");
            return;
        }

        /* Check that destination call is valid. */
        if (dst_call == call) {
            puts("Destination call number must not be the same "
                "as the call being transferred");
            return;
        }
        if (dst_call >= PJSUA_MAX_CALLS) {
            puts("Invalid destination call number");
            return;
        }
        if (!pjsua_call_is_active(dst_call)) {
            puts("Invalid destination call number");
            return;
        }

        pjsua_msg_data_init(&msg_data_);
        if (no_refersub) {
            /* Add Refer-Sub: false in outgoing REFER request */
            pjsip_generic_string_hdr_init2(&refer_sub, &STR_REFER_SUB,
                                           &STR_FALSE);
            pj_list_push_back(&msg_data_.hdr_list, &refer_sub);
        }

        pjsua_call_xfer_replaces(call, dst_call,
                                 PJSUA_XFER_NO_REQUIRE_REPLACES,
                                 &msg_data_);
    }
}

static void ui_send_dtmf_2833()
{
    if (current_call == -1) {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    } else if (!pjsua_call_has_media(current_call)) {
        PJ_LOG(3,(THIS_FILE, "Media is not established yet!"));
    } else {
        pj_str_t digits;
        int call = current_call;
        pj_status_t status;
        char buf[128];

#if defined(PJMEDIA_HAS_DTMF_FLASH) && PJMEDIA_HAS_DTMF_FLASH!= 0               
        if (!simple_input("DTMF strings to send (0-9*R#A-B)", buf,
            sizeof(buf)))
#else
        if (!simple_input("DTMF strings to send (0-9*#A-B)", buf,
            sizeof(buf)))
#endif
        {
            return;
        }

        if (call != current_call) {
            puts("Call has been disconnected");
            return;
        }

        digits = pj_str(buf);
        status = pjsua_call_dial_dtmf(current_call, &digits);
        if (status != PJ_SUCCESS) {
            pjsua_perror(THIS_FILE, "Unable to send DTMF", status);
        } else {
            puts("DTMF digits enqueued for transmission");
        }
    }
}

static void ui_send_dtmf_info()
{
    if (current_call == -1) {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    } else {
        int call = current_call;
        pj_status_t status;
        char buf[128];
        pjsua_call_send_dtmf_param param;

        if (!simple_input("DTMF strings to send (0-9*#A-B)", buf,
            sizeof(buf)))
        {
            return;
        }

        if (call != current_call) {
            puts("Call has been disconnected");
            return;
        }       
        pjsua_call_send_dtmf_param_default(&param);
        param.digits = pj_str(buf);
        param.method = PJSUA_DTMF_METHOD_SIP_INFO;
        status = pjsua_call_send_dtmf(current_call, &param);
        if (status != PJ_SUCCESS) {
            pjsua_perror(THIS_FILE, "Error sending DTMF", status);
        }
    }
}

static void ui_send_arbitrary_request()
{
    char text[128];
    char buf[128];
    char *uri;
    input_result result;
    pj_str_t tmp;

    if (pjsua_acc_get_count() == 0) {
        puts("Sorry, need at least one account configured");
        return;
    }

    puts("Send arbitrary request to remote host");

    /* Input METHOD */
    if (!simple_input("Request method:",text,sizeof(text)))
        return;

    /* Input destination URI */
    uri = NULL;
    ui_input_url("Destination URI", buf, sizeof(buf), &result, PJ_FALSE);
    if (result.nb_result != PJSUA_APP_NO_NB) {

        if (result.nb_result == -1) {
            puts("Sorry you can't do that!");
            return;
        } else if (result.nb_result == 0) {
            uri = NULL;
            if (current_call == PJSUA_INVALID_ID) {
                puts("No current call");
                return;
            }
        } else {
            pjsua_buddy_info binfo;
            pjsua_buddy_get_info(result.nb_result-1, &binfo);
            tmp.ptr = buf;
            pj_strncpy_with_null(&tmp, &binfo.uri, sizeof(buf));
            uri = buf;
        }

    } else if (result.uri_result) {
        uri = result.uri_result;
    } else {
        return;
    }

    if (uri) {
        tmp = pj_str(uri);
        send_request(text, &tmp);
    } else {
        /* If you send call control request using this method
        * (such requests includes BYE, CANCEL, etc.), it will
        * not go well with the call state, so don't do it
        * unless it's for testing.
        */
        pj_str_t method = pj_str(text);
        pjsua_call_send_request(current_call, &method, NULL);
    }
}

static void ui_toggle_call_sdp_offer()
{
    app_config.enable_loam = !app_config.enable_loam;

    printf("Subsequent calls and UPDATEs will contain SDP offer: ");
    if (app_config.enable_loam) {
        printf("NO.\n");
    } else {
        printf("YES.\n");
    }
}

static void ui_echo(char menuin[])
{
    if (pj_ansi_strnicmp(menuin, "echo", 4)==0) {
        pj_str_t tmp;

        tmp.ptr = menuin+5;
        tmp.slen = pj_ansi_strlen(menuin)-6;

        if (tmp.slen < 1) {
            puts("Usage: echo [0|1]");
            return;
        }
        cmd_echo = *tmp.ptr != '0' || tmp.slen!=1;
    }
}

static void ui_sleep(char menuin[])
{
    if (pj_ansi_strnicmp(menuin, "sleep", 5)==0) {
        pj_str_t tmp;
        int delay;

        tmp.ptr = menuin+6;
        tmp.slen = pj_ansi_strlen(menuin)-7;

        if (tmp.slen < 1) {
            puts("Usage: sleep MSEC");
            return;
        }

        delay = (int)pj_strtoul(&tmp);
        if (delay < 0) delay = 0;
        pj_thread_sleep(delay);
    }
}

static void ui_subscribe(char menuin[])
{
    char buf[128];
    input_result result;

    ui_input_url("(un)Subscribe presence of", buf, sizeof(buf), &result,
                 PJ_TRUE);
    if (result.nb_result != PJSUA_APP_NO_NB) {
        if (result.nb_result == -1) {
            int i, count;
            count = pjsua_get_buddy_count();
            for (i=0; i<count; ++i)
                pjsua_buddy_subscribe_pres(i, menuin[0]=='s');
        } else if (result.nb_result == 0) {
            puts("Sorry, can only subscribe to buddy's presence, "
                "not from existing call");
        } else {
            pjsua_buddy_subscribe_pres(result.nb_result-1, (menuin[0]=='s'));
        }

    } else if (result.uri_result) {
        puts("Sorry, can only subscribe to buddy's presence, "
            "not arbitrary URL (for now)");
    }
}

static void ui_subscribe_dlg_event(pj_bool_t sub)
{
    char buf[128];
    input_result result;

    ui_input_url("(un)Subscribe dialog event of", buf, sizeof(buf), &result,
                 PJ_TRUE);
    if (result.nb_result != PJSUA_APP_NO_NB) {
        if (result.nb_result == -1) {
            int i, count;
            count = pjsua_get_buddy_count();
            for (i=0; i<count; ++i)
                pjsua_buddy_subscribe_dlg_event(i, sub);
        } else if (result.nb_result == 0) {
            puts("Sorry, can only subscribe to buddy's dialog event, "
                 "not from existing call");
        } else {
            pjsua_buddy_subscribe_dlg_event(result.nb_result-1, sub);
        }

    } else if (result.uri_result) {
        puts("Sorry, can only subscribe to buddy's dialog event, "
             "not arbitrary URL (for now)");
    }
}

static void ui_register(char menuin[])
{
    switch (menuin[1]) {
    case 'r':
        /*
        * Re-Register.
        */
        pjsua_acc_set_registration(current_acc, PJ_TRUE);
        break;
    case 'u':
        /*
        * Unregister
        */
        pjsua_acc_set_registration(current_acc, PJ_FALSE);
        break;
    }
}

static void ui_toggle_state()
{
    pjsua_acc_info acc_info;

    pjsua_acc_get_info(current_acc, &acc_info);
    acc_info.online_status = !acc_info.online_status;
    pjsua_acc_set_online_status(current_acc, acc_info.online_status);
    printf("Setting %s online status to %s\n",
           acc_info.acc_uri.ptr,
           (acc_info.online_status?"online":"offline"));
}

/*
 * Change extended online status.
 */
static void ui_change_online_status()
{
    char menuin[32];
    pj_bool_t online_status;
    pjrpid_element elem;
    int choice;
    unsigned i;

    enum {
        AVAILABLE, BUSY, OTP, IDLE, AWAY, BRB, OFFLINE, OPT_MAX
    };

    struct opt {
        int id;
        char *name;
    } opts[] = {
        { AVAILABLE, "Available" },
        { BUSY, "Busy"},
        { OTP, "On the phone"},
        { IDLE, "Idle"},
        { AWAY, "Away"},
        { BRB, "Be right back"},
        { OFFLINE, "Offline"}
    };

    printf("\n"
           "Choices:\n");
    for (i=0; i<(unsigned)PJ_ARRAY_SIZE(opts); ++i) {
        printf("  %d  %s\n", opts[i].id+1, opts[i].name);
    }

    if (!simple_input("Select status", menuin, sizeof(menuin)))
        return;

    choice = atoi(menuin) - 1;
    if (choice < 0 || choice >= OPT_MAX) {
        puts("Invalid selection");
        return;
    }

    pj_bzero(&elem, sizeof(elem));
    elem.type = PJRPID_ELEMENT_TYPE_PERSON;

    online_status = PJ_TRUE;

    switch (choice) {
    case AVAILABLE:
        break;
    case BUSY:
        elem.activity = PJRPID_ACTIVITY_BUSY;
        elem.note = pj_str("Busy");
        break;
    case OTP:
        elem.activity = PJRPID_ACTIVITY_BUSY;
        elem.note = pj_str("On the phone");
        break;
    case IDLE:
        elem.activity = PJRPID_ACTIVITY_UNKNOWN;
        elem.note = pj_str("Idle");
        break;
    case AWAY:
        elem.activity = PJRPID_ACTIVITY_AWAY;
        elem.note = pj_str("Away");
        break;
    case BRB:
        elem.activity = PJRPID_ACTIVITY_UNKNOWN;
        elem.note = pj_str("Be right back");
        break;
    case OFFLINE:
        online_status = PJ_FALSE;
        break;
    }

    pjsua_acc_set_online_status2(current_acc, online_status, &elem);
}

/*
 * List the ports in conference bridge
 */
static void ui_conf_list()
{
    unsigned i, count;
    pjsua_conf_port_id id[PJSUA_MAX_CONF_PORTS];

    printf("Conference ports:\n");

    count = PJ_ARRAY_SIZE(id);
    pjsua_enum_conf_ports(id, &count);

    for (i=0; i<count; ++i) {
        char txlist[PJSUA_MAX_CALLS*4+10];
        unsigned j;
        pjsua_conf_port_info info;

        pjsua_conf_get_port_info(id[i], &info);

        txlist[0] = '\0';
        for (j=0; j<info.listener_cnt; ++j) {
            char s[10];
            pj_ansi_snprintf(s, sizeof(s), "#%d ", info.listeners[j]);
            pj_ansi_strxcat(txlist, s, sizeof(txlist));
        }
        printf("Port #%02d[%2dKHz/%dms/%d] %20.*s  transmitting to: %s\n",
               info.slot_id,
               info.clock_rate/1000,
               info.samples_per_frame*1000/info.channel_count/info.clock_rate,
               info.channel_count,
               (int)info.name.slen,
               info.name.ptr,
               txlist);

    }
    puts("");
}

static void ui_conf_connect(char menuin[])
{
    char tmp[10], src_port[10], dst_port[10];
    pj_status_t status;
    int cnt;
    const char *src_title, *dst_title;

    cnt = sscanf(menuin, "%s %s %s", tmp, src_port, dst_port);

    if (cnt != 3) {
        ui_conf_list();

        src_title = (menuin[1]=='c'? "Connect src port #":
                                     "Disconnect src port #");
        dst_title = (menuin[1]=='c'? "To dst port #":"From dst port #");

        if (!simple_input(src_title, src_port, sizeof(src_port)))
            return;

        if (!simple_input(dst_title, dst_port, sizeof(dst_port)))
            return;
    }

    if (menuin[1]=='c') {
        status = pjsua_conf_connect(my_atoi(src_port), my_atoi(dst_port));
    } else {
        status = pjsua_conf_disconnect(my_atoi(src_port), my_atoi(dst_port));
    }
    if (status == PJ_SUCCESS) {
        puts("Success");
    } else {
        puts("ERROR!!");
    }
}

static void ui_adjust_volume()
{
    char buf[128];
    char text[128];
    snprintf(buf, sizeof(buf), "Adjust mic level: [%4.1fx] ",
             app_config.mic_level);
    if (simple_input(buf,text,sizeof(text))) {
        char *err;
        app_config.mic_level = (float)strtod(text, &err);
        pjsua_conf_adjust_rx_level(0, app_config.mic_level);
    }
    snprintf(buf, sizeof(buf), "Adjust speaker level: [%4.1fx] ",
             app_config.speaker_level);
    if (simple_input(buf,text,sizeof(text))) {
        char *err;
        app_config.speaker_level = (float)strtod(text, &err);
        pjsua_conf_adjust_tx_level(0, app_config.speaker_level);
    }
}

static void ui_dump_call_quality()
{
    if (current_call != PJSUA_INVALID_ID) {
        log_call_dump(current_call);
    } else {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    }
}

static void ui_dump_configuration()
{
    char settings[2000];
    int len;

    len = write_settings(&app_config, settings, sizeof(settings));
    if (len < 1)
        PJ_LOG(1,(THIS_FILE, "Error: not enough buffer"));
    else
        PJ_LOG(3,(THIS_FILE, "Dumping configuration (%d bytes):\n%s\n",
                  len, settings));
}

static void ui_write_settings(const char *filename)
{
    char settings[2000];
    int len;

    len = write_settings(&app_config, settings, sizeof(settings));
    if (len < 1)
        PJ_LOG(1,(THIS_FILE, "Error: not enough buffer"));
    else {
        pj_oshandle_t fd;
        pj_status_t status;

        status = pj_file_open(app_config.pool, filename, PJ_O_WRONLY, &fd);
        if (status != PJ_SUCCESS) {
            pjsua_perror(THIS_FILE, "Unable to open file", status);
        } else {
            pj_ssize_t size = len;
            pj_file_write(fd, settings, &size);
            pj_file_close(fd);

            printf("Settings successfully written to '%s'\n", filename);
        }
    }
}

/*
 * Dump application states.
 */
static void ui_app_dump(pj_bool_t detail)
{
    pjsua_dump(detail);
}

static void ui_call_redirect(char menuin[])
{
    if (current_call == PJSUA_INVALID_ID) {
        PJ_LOG(3,(THIS_FILE, "No current call"));
    } else {
        if (!pjsua_call_is_active(current_call)) {
            PJ_LOG(1,(THIS_FILE, "Call %d has gone", current_call));
        } else if (menuin[1] == 'a') {
            pjsua_call_process_redirect(current_call,
                PJSIP_REDIRECT_ACCEPT_REPLACE);
        } else if (menuin[1] == 'A') {
            pjsua_call_process_redirect(current_call,
                PJSIP_REDIRECT_ACCEPT);
        } else if (menuin[1] == 'r') {
            pjsua_call_process_redirect(current_call,
                PJSIP_REDIRECT_REJECT);
        } else {
            pjsua_call_process_redirect(current_call,
                PJSIP_REDIRECT_STOP);
        }
    }
}

static void ui_handle_ip_change()
{
    pjsua_ip_change_param param;
    pj_status_t status;

    pjsua_ip_change_param_default(&param);
    status = pjsua_handle_ip_change(&param);
    if (status != PJ_SUCCESS) {
        pjsua_perror(THIS_FILE, "IP change failed", status);
    }
}

static void ui_send_rtt()
{
    char buf[100];
    pjsua_call_send_text_param param;
    pj_status_t status;

    if (current_call == PJSUA_INVALID_ID) {
        PJ_LOG(3,(THIS_FILE, "No current call"));
        return;
    }

    if (!simple_input("Enter text to send", buf, sizeof(buf)))
        return;

    pjsua_call_send_text_param_default(&param);
    param.text = pj_str(buf);
    status = pjsua_call_send_text(current_call, &param);
    if (status != PJ_SUCCESS) {
        pjsua_perror(THIS_FILE, "Unable to send text", status);
    }

#if 0
    // For testing buffering and redundancy
    pj_str_t abc = pj_str("abc");
    pj_str_t def = pj_str("defgh");
    pjsua_call_send_text(current_call, -1, &abc);
    pjsua_call_send_text(current_call, -1, &def);
#endif
}

/*
 * Main "user interface" loop.
 */
void legacy_main(void)
{
    char menuin[80];
    char buf[128];

    keystroke_help();

    for (;;) {

        printf(">>> ");
        fflush(stdout);

        if (fgets(menuin, sizeof(menuin), stdin) == NULL) {
            /*
             * Be friendly to users who redirect commands into
             * program, when file ends, resume with kbd.
             * If exit is desired end script with q for quit
             */
            /* Reopen stdin/stdout/stderr to /dev/console */
#if ((defined(PJ_WIN32) && PJ_WIN32!=0) || \
     (defined(PJ_WIN64) && PJ_WIN64!=0)) && \
  (!defined(PJ_WIN32_WINCE) || PJ_WIN32_WINCE==0)
            if (freopen ("CONIN$", "r", stdin) == NULL) {
#else
            if (1) {
#endif
                puts("Cannot switch back to console from file redirection");
                menuin[0] = 'q';
                menuin[1] = '\0';
            } else {
                puts("Switched back to console from file redirection");
                continue;
            }
        }

        if (cmd_echo) {
            printf("%s", menuin);
        }

        /* Update call setting */
        pjsua_call_setting_default(&call_opt);
        call_opt.aud_cnt = app_config.aud_cnt;
        call_opt.vid_cnt = app_config.vid.vid_cnt;
        call_opt.txt_cnt = app_config.txt_cnt;

        switch (menuin[0]) {

        case 'm':
            /* Make call! : */
            ui_make_new_call();
            break;

        case 'M':
            /* Make multiple calls! : */
            ui_make_multi_call();
            break;

        case 'n':
            ui_detect_nat_type();
            break;

        case 'i':
            /* Send instant messaeg */
            ui_send_instant_message();
            break;

        case 'a':
            ui_answer_call();
            break;

        case 'h':
            ui_hangup_call(menuin);
            break;

        case ']':
        case '[':
            /*
             * Cycle next/prev dialog.
             */
            ui_cycle_dialog(menuin);
            break;

        case '>':
        case '<':
            ui_cycle_account();
            break;

        case '+':
            if (menuin[1] == 'b') {
                ui_add_buddy();
            } else if (menuin[1] == 'a') {
                ui_add_account(&app_config.rtp_cfg);
            } else {
                printf("Invalid input %s\n", menuin);
            }
            break;

        case '-':
            if (menuin[1] == 'b') {
                ui_delete_buddy();
            } else if (menuin[1] == 'a') {
                ui_delete_account();
            } else {
                printf("Invalid input %s\n", menuin);
            }
            break;

        case 'H':
            /*
             * Hold call.
             */
            ui_call_hold();
            break;

        case 'o':
            /*
             * Toggle call SDP offer
             */
            ui_toggle_call_sdp_offer();
            break;

        case 'v':
#if PJSUA_HAS_VIDEO
            if (menuin[1]=='i' && menuin[2]=='d' && menuin[3]==' ') {
                vid_handle_menu(menuin);
            } else
#endif
            if (current_call != -1) {
                /*
                 * re-INVITE
                 */
                ui_call_reinvite();
            } else {
                PJ_LOG(3,(THIS_FILE, "No current call"));
            }
            break;

        case 'U':
            /*
             * Send UPDATE
             */
            ui_send_update();
            break;

        case 'C':
            if (menuin[1] == 'p') {
                ui_manage_codec_prio();
            }
            break;

        case 'x':
            /*
             * Transfer call.
             */
            ui_call_transfer(app_config.no_refersub);
            break;

        case 'X':
            /*
             * Transfer call with replaces.
             */
            ui_call_transfer_replaces(app_config.no_refersub);
            break;

        case '#':
            /*
             * Send DTMF strings.
             */
            ui_send_dtmf_2833();
            break;

        case '*':
            /* Send DTMF with INFO */
            ui_send_dtmf_info();
            break;

        case 'S':
            /*
             * Send arbitrary request
             */
            ui_send_arbitrary_request();
            break;

        case 'e':
            ui_echo(menuin);
            break;

        case 's':
            if (pj_ansi_strnicmp(menuin, "sleep", 5)==0) {
                ui_sleep(menuin);
                break;
            }
            /* Continue below */

        case 'u':
            /*
             * Subscribe/unsubscribe presence.
             */
            ui_subscribe(menuin);
            break;

        case 'D':
            /* Subscribe/unsubscribe dialog event */
            ui_subscribe_dlg_event(menuin[1] != 'u');
            break;

        case 'r':
            if (menuin[1] == 't') {
                ui_send_rtt();
            } else {
                ui_register(menuin);
            }
            break;

        case 't':
            ui_toggle_state();
            break;

        case 'T':
            ui_change_online_status();
            break;

        case 'c':
            switch (menuin[1]) {
            case 'l':
                ui_conf_list();
                break;
            case 'c':
            case 'd':
                ui_conf_connect(menuin);
                break;
            }
            break;

        case 'V':
            /* Adjust audio volume */
            ui_adjust_volume();
            break;

        case 'd':
            if (menuin[1] == 'c') {
                ui_dump_configuration();
            } else if (menuin[1] == 'q') {
                ui_dump_call_quality();
            } else {
                ui_app_dump(menuin[1]=='d');
            }
            break;

        case 'f':
            if (simple_input("Enter output filename", buf, sizeof(buf))) {
                ui_write_settings(buf);
            }
            break;

        case 'L':   /* Restart */
        case 'q':
            legacy_on_stopped(menuin[0]=='L');
            goto on_exit;

        case 'R':
            ui_call_redirect(menuin);
            break;

        case 'I': /* Handle IP change. */
            ui_handle_ip_change();
            break;

        default:
            if (menuin[0] != '\n' && menuin[0] != '\r') {
                printf("Invalid input %s", menuin);
            }
            keystroke_help();
            break;
        }
    }

on_exit:
    ;
}
